i'm not talkin about some expensive aftermarket shit... some times when i'm on the expressway my steering wheel vitbrates, it doesn't do it that i noticed with the stock wheels but i noticed it w/ my 17". i got them balanced and did ever think about it again until a few weeks later when i noticed it doing it again but not very bad and it doesn't do it all the time. it seems like it is only on sertain roads. could it be my shocks? or do my 17"'s just suck? TIA